Take one look at NPD's quarterly gaming sales report and it'll be hard to deny that digital distribution now carries the industry's momentum. For the months of July through September, digital sales were pegged at $1.4 billion, which represents a 22 percent increase over Q3 2011. In comparison, new physical sales declined by 16 percent year-over-year, which raked in $1.07 billion for the industry. It's only when the used and rental markets are taken into consideration -- which snagged $399 million in change -- that phy
